Harma Valves / EL34/E34L-HARMA STR MESA SELECT

EL34/E34L-HARMA STR MESA SELECT Click on image(s) above to view larger
£18.00

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Harma valves consist of a selected range of valves that are chosen after meeting stringent standards for sound quality and reliability. These valves are sourced from current production as well as some of the finest Nos valves available. Unlike our competitors no Harma valves, past or present has been made in China. Harma valves represent the finest available items of their type available.

Harma valves are tested using a range of custom designed and built test rigs which are unique to Watford valves.These unique tests are not offered by any other valve supplier in the world.

All Harma pre amp valves undergo the drive rating system; the valve undergoes a series of through tests under full operational conditions. This involves a controlled burn in process to ensure perfect stability and correct ageing. A shock and vibration test, microphoney, hum, and a balance and symmetry test.

All Harma output valves undergo our own unique real world burst testing. No other supplier tests valves this way. The burst testing process involves a series of varying timed electrical signal bursts. This runs the valves under the same stress conditions that they will meet in your amplifier especially when overdriven. All out put valves are then dual matched by us on anode current and gain. This will ensure that you get the best selected valves available anywhere in the world.
Mesa Select for use in Mesa Boogies


This valve is specially selected to run in Mesa Boogies fixed bias arrangement and will work in all Boogie that use EL34 or in the amplifiers with Simul-Class in the correct sockets.

The Harma STR E34L has found favour with many professional rock guitarists since it was road tested by Ben Matthews of Thunder back in the mid 1990íS. Ben said of the HARMA E34L I fitted these in my Mesa Boogie and toured the U.K, they blew me and the first ten rows away.

The valve has a number of features and takes a number of design features from the famous KT77 that was produced by G.E.C of the U.K. The valve shares the same anode plate construction with special heat dissipation wings give a more linear current transfer. The grids of the valves use gold plated grid wire and are made with a very rigid construction. The glass envelope is manufactured with heavy grade glass which makes the valves free from microphonics and ideal to take the punishment on the road.

So we are now nearly in the 20th year of production of this valve and it still one of the most popular EL34 on the market for the following reasons.

Sound wise a customer summed this valve up as a pocket rocket. The valve produces a tight, punchy and aggressive sound which is the main ingredient of a classic British Marshall sound.

The valve has a very big and tight bottom end response, long sustain with smooth and extended treble. The Harma E34L will cut through the mix and sound full and open.
Unlike many EL34 on the market today sound thin and weak. Each valve is carefully tested and gain selected to provide the classic British Rock sound.

All Harma output valves undergo our own unique real world burst testing. No other supplier tests valves this way. The burst testing process involves a series of varying timed electrical signal bursts. This runs the valves under the same stress conditions that they will meet in your amplifier especially when overdriven. All out put valves are then dual matched by us on anode current and gain. This will ensure that you get the best selected valves available anywhere in the world.

Here is what Steve Segar wrote on installation of the Harma E34L into his Marshall.

"Valves arrived promptly, and added to the pre amp valves I got from you a while back(all after much consultation of the various reviews of different valve models on your website) the new valves gave my1975 50W Marshall a whole new dimension in amazing sound! Gigged the new setup for the first time yesterday and was blown away by how good it sounded. Thanks and keep up the amazing work there!

Steve (an even happier Marshall owner)

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